Half to fbank a



i (No ModeL) v G. G. PREFANTAINE.

OIL CUP.

,452 Patented Sept. 29, 1885.

r. Washinglon. D c.

UNITED STATES.

PATENT OFFICE.

GEORGE G. PREFANTAINE, OF WHITE-HALL, NEYV YORK, ASSIGNOR OF ONE HALF TO FRANK A. HOTOHKISS, OF SAME PLACE.

OIL-CUP.

SPECIFICATION forming part of Letters Patent No. 327,452, dated September 29, 1885.

Application filed May 7, 1885. (No model.)

To all whom it may concern:

Be it known that I, GEORGE G. PREFAN- TAINE, a citizen of the United States of America, residing at Whitehall, in the county of Washington and State of New York, have invented certain new and useful Improvements in Oil-Cups; and I do hereby declare the following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

[5 My invention relates to lubricators; and it consists in the improvements hereinafter fully described and set forth.

In the accompanying drawings,forming part of this specification, Figure 1 is a side elevation of a lubricator constructed in accordance with my improvements and embodying my invention,and Fig. 2 is a central vertical section of Fig. 1.

The body or case portion of the lubricator consists of a cap, A, with an annular depend ing flange, a, which is integrally threaded, as shown in Fig. 2,to engage the external threads, I), on the upper portion of a cylinder, B, forming the annular sides of the oil reservoir of 0 chamber 0. The said chamber is preferably lined with glass c,which covers a series of vertical openings, d, formed in the cylinder B,

through which openings the quantity of oil in the said reservoir may be ascertained at all times.

The lower portion of said cylinder B is externally threaded in order to engage corresponding threads formed interiorly on an an nular flange, e, integral with a base portion, D, which is of a slightly-contracted form, as disclosed most clearly in Fig. 2.

The said base portion D is provided with a vertical perforation,which is threaded to receive the threaded neck E of a depending ex- 5 tension, F, preferably enlarged to present horizontal shoulders f, against which bear the up per face of a mouth-piece, G, which has a threaded recess at its upper end to engage a threaded depending flange, g, of the said extension F. The upper portion of the latter projects up in the oil-chamber 0 beyond the base portion to form a raised seat or hearing,

h, for a valve, H, which rests on said seat, and has a shank, i, depending down into a vertical central opening in the extension F. The 5 5 sides of said shank are provided with vertical groovesj, as seen in Fig. 2.

The interior of the mouth-piece G is cut away to present a chamber, I, the bottom of the chamber presenting a seat for a valve, J, which has a vertical shank, 70, extending up through the chamber I into the lower portion of the passage formed in the extension F. The said shank k is also provided with vertical grooves Z. An opening, K, forms a discharge for the chamber I.

L refers to vertical spindle which passes through the horizontal portion at of a yoke, M, located in the chamber 0.

The cap A has a threaded opening, which is closed by a plug, N, having a knob, O, for manipulating the same.

The mouth-piece G enters an opening in the cylinder upon which the device is applied, thereby causing the opening K to have direct communication with the interior of the cylinder. Now, when the motive fluid enters the cylinder, it raises the valve J from off of the seat formed by the bottom of the chamber I,s0 that the valve will abut against the upper face of said chamber, thus again cutting off communication through the opening K.

It will be noted that when the valve J has reached the position described its shank Z has contacted with the end of the shank t, and lifted the valve H off its seat, thereby permitting oil to pass from the chamber 0 down into the passage in the extension F. When the fluid-pressure ceases, by reason of the piston changing its position in the cylinder, the valves resume their first position, the oil in the extension-passage finding its way into the chamber G. Upon the valve J again moving from its seat the oil is fed through the opening K to the oil-cylinder. Thus the ac- 9 5 tion of the lubricator is rendered automatic and the positive action assured as long as the cylinder and parts continue operative. The spindle L may be utilized to move the valve H from its seat in order to discharge all the oil from the chamber 0, or to feed the oil more freely to any part.

I claim bearing on said shoulder, and having an up- The combination, in a lubricator, of an oilweirdly-extending shank adapted, when said chamber,adepending extension having aneck, valve is raised, to contact with the depending E, threaded to engage with an opening in the shank of said first-mentioned valve, substanr 5 5 bottom of said oi1-chamber, the extremity of tially as set forth.

said neck being extended slightly upon the In testimony whereof Iafix my signature in bottom of said chamber, a valve bearing on presence of two witnesses. I said extremity, a mouth-piece threaded at its GEORGE G. PREFANTAIN E. upper end to engage the lower portion of the Witnesses: 1o threaded extension and externally recessed to FRANK A. HOTOHKISS,

present an internal shoulder, a second valve HERBERT 0. RICE. 

